Simple Definition of invade
: to enter (a place, such as a foreign country) in order to take control by military force
: to enter (a place) in large numbers
: to enter or be in (a place where you are not wanted)
Examples of invade in a sentence
The troops invaded at dawn.
When tourists invade, the town is a very different place.
The cancer eventually invaded the brain.
Weeds had invaded the garden.
Bacteria invaded and caused an infection.
Origin and Etymology of invade
Middle English, from Latin invadere, from in- + vadere to go — more at wade
First Known Use: 15th century
Synonym Discussion of invade
INVADE Defined for Kids
Definition of invade for Students
1 : to enter by force to conquer or plunder
2 : to show lack of respect for <She invaded their privacy.>
Medical Definition of invade
1: to enter and spread within either normally (as in development) or abnormally (as in infection) often with harmful effects <protect the body from invading viruses> <branches of a nerve invade the skin area>
2: to affect injuriously and progressively <gangrene invades healthy tissue>
Legal Definition of invade
1 : to encroach upon : infringe <invading a constitutional right>
2 : to make payments out of (a fund from which payments are not ordinarily made) <authorized the trustee to invade the principal for educational expenses>
Seen and Heard
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